Room unit/HMI



FIG. 1 is a front view of an operation device of our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a perspective view of front, top and right side thereof.

The broken line showing of structural features is included for the purpose of illustrating non-claimed subject matter and forms no part of the claimed design. 

CLAIM The ornamental design for a room unit/HMI, as shown and described. 